Before installing a valve, carefully verify that its model and specifications correspond with the design requirements.
Cross-reference the valve against its model designation and the manufacturer's instructions to confirm whether it is suitable for operation under the specified conditions.
When hoisting a valve, the lifting ropes should be secured around the flanged joint between the valve body and the bonnet; under no circumstances should they be tied to the handwheel or valve stem, as this could result in damage to these components.
When installing a valve on horizontal piping, the valve stem must be oriented vertically upward; installing the valve with the stem pointing downward is strictly prohibited.
During installation, avoid using forceful methods-such as pulling or prying-to align the valve with the piping; such actions can lead to uneven stress distribution and result in damage to the valve.
Rising-stem gate valves should not be installed in damp underground environments, as this increases the risk of corrosion to the valve stem.